Armature-circuit-testing apparatus.



C. ZEEK. ARMATURE cmcul TESTANG APPARATUS.

- y APPLICATION r1LEo'ocT.s1, isle. 1,276,304. Patented Aug. 20, 1918'.

`4for deteoing Wires in'tii'e'er ."apperetusor Y ity engeging emi eennreeo, l anniroe-nini.y

inn oirI 'Be' it 'known that l. '(`Li ;1jZn;-iit a. aitizen oi theilnitel States, residiue3 at San Diego, in theeoli'ty oli bien Diego'and State of California, have "invented 'certain new Vaud useful improv/m umts Testing A is ui'spoci.,

liy invn'ua testing electric j Uil Circuits. more partieulariy circuitsin gene vide au epgaratus or this eiess u ieh'euto- :idiusts' itself todifferent sis/lect second7V to'-v pre1/1de en appa-'- inutioalif comm-utretus .ot this oiessv h 'ineens for producing an vinduced current.;"thus melting vthe tone I in the reeeiuer more audible?, and :adding tothe eilcieney of the epparatusgtliird, to proa, circuit ie-e'otnpletefor ".vhether'it snorted- Ve211gronnde3, Withoutdisconneotlng-any ied' his @ieee with ineens for reedned es to itssizeend moved reedrl thereon so 'its to lenge'ge ditierent segments'without 'di:t'-

oulty,' andi' fth, te vprovide apparatus o this 'class Uwwhich issimple-end economical of construction. dumme, to operate 'and Will notreed E order' i -illfitiii'tliese and other ebjecte in. View as@ 'willappear' hereinafter, invention oon siste'- of certuin'novei'featuresconstruetion, combination anderrengement of. parte 'es willbereineltterge described indeteil end dotted linesy the' gosition oftheengfegng arms. "ri the-engeg ng portion of theqepparetusshown on with anarmature, showing the engaging iu l-irniatureircuit-- aratus. o'ff whichthe following relates to an apparatus' for unisg broken Wires', shorttor or motor armatures, and;

mz'e nuttin to 'provide an" the seperete segments. of

thef-cornnutetorwhiebf means ere so posi-' n-.the'eoinmutater regardlessei y deterierete' or,E get outer lines und showing" `hydotted lines aconsid# erabiy lergercommutato end'show'ing by g.' 2 is' frontelevational View' of* 1 dnctor the one ends ot' which connectrespecinenibers in position for 'testing' einenUne--encUrT-mEsT1neAPPARATUS.

'For grounds. Fig'. 3 is a longitudinei sectionalfview through 1-1 ofFig. l of the engagingmember of the-apparatus, and Fie. i is adiagrammatic `view of the electrical connections of the apparatus.

Similar characters of reference refer to similar vparts'throughout theseveral Views.

The arms l kvand' 2, stationary engaging pin 3, movable engaging pin 4,insulated head 5, handle member G, iron tube 7, indue tionfcoil 8.ground Contact 9 and receiver l0 constitute the principal vparte 'of myapp rates. f

The 'hea'd 5 is composed of insulating` man terial end is provided withacentral hole therethrough which is secured onto one end of the tube T.'Secured in the-upper side ot' said head 5 `are a pair of lugs 5R whichen tendv outwardly and'upon W ich` are pivob ellymounted thev arms l and9. and mounted on the extended ends'of 'said lugs and against seid armseretorsion springs 5b which tend` 'to-pull the extended ends of the armsl and 2 toward'each other. Mounted near 'the together1 zit-their ends.Secured in the lower,

edge o1 the head is the stationary pin 3 Whieh'ezgtends some distancefrom seid head and adjacent thereto is anotherpin 4t which' isreciprocaily mounted in a hole', and engaging with tbe extending portionthereof is a springaffwhichtends to press the pin 4. ut- Wardat'ztlltilnes. T his spring' engages in e notch inthe pin for holding'it V'positioned in the hole. yMounted over the tube 7 and against thehead 5 is the hnndlelnember 6 -Which is e hollow member and secured inrammed, Aug. eo, tete', Application ruled (Estetici-31. 1816. Seriallife-128,653.

position by ineens of the nut' 6 ont-he end ofthe tube 7. Mounted inthis' handle inemm ber and outside of the tube 'Z 1s an inductioncoil-8, the tube forming the core tor said coil.

@neef the' terminals from thcpriinary Wind- ,gingoi said coil connectswith one of the lugs a'end the other terminal connects with' the otherlug 5u' while both'of'the terminals of the secondary winding connectwith the con doctors 10b and 1Qc4 which extend toanflJ Connect with thereceiver 10. Mounted inside of the 'tube 8 are a" pair of conductors 7aandb. The conductor 7l 1s a double contiv'ey Withthe pins 3 and 4, theone conconnecting with the spring la which conducts vvwith a Contact 9'which isadapted to engage- With the shaft of'the armature, theopera-lmutatr at all times. If the coil is faultless best in Fig. 2 ofthejgcurrent to the pinid. The other ends of said conductor 7bconnectwith any source of electrical'energy which produces an alternatingcurrent, preferably an ordinary electric light socket. -It will be herenoted that l this apparatus' is connected in` series with an electriclamp to provide resistance. One end of the conductor 7a4 connects withthe stationary lpin 3 and its other end connects tor engaging saidcontact as desired. It will be here noted that this conductor 7a and thecontact 9 are only used in detecting grounds in which oase the pin 8does not. engage with the commutator but is positioned as shown in Fig.2 of the drawings. The receiver 10 is the ordinary or conventional type,

of telephone receiver and is preferably provided with a spring support10*1 to hold it in position against the ear of the operator.

Though l have shown and described a par- 'i ticular construction,.combinationfand arrangement of parts, I do not wish to ber limited tothis particular construction, combination and arrangement, but desire toinclude in the purview of my invention the construction, combination.and arrangement substantially as set forth in the appended claims.A f

The apparatus is A spring piece 10a 'is placed over the top of theoperators head so that the receiver rests against one ear. The handle 6is taken in one handfand the arms l and 2 spread apart and the devicepositioned on the commutator v of the armature as 'shownbest in,Fig.-'1. of '-the drawings and moved around the coinmutator in eitherdirection. 1t will be noted that fthe arms 1 and 2 andv the pins 3 and 4engage with separate segments of the coniand complete the diaphragm inthe receiver. will be actuated causing anormal tone. 1f the-coil is'broken and is not com llete the tone willbe very loud, while ift e'coilis short'ed there is no sound produced. This performance is carriedthroughout the several segments of the commutator thus testing it forbroken vcircuits and sliorted circuits. 1n order to test the same for aground the pin 3 does not engage the commutator and the contact .9 isplaced in engagement` with the shaft of the armature, all as. shown thedrawings, and each Asegment tested as before. f When the coil that isgrounded is reached there will' be no audible sound inthe receiver andthe sound will increase as the distance from the grounded coilincreasesin either direction.

.Having thus described my invention, what l claim as new and desirel tosecure by Let# ters Patent is la lin an armature circuit -testingapparaused as follows: 'lhey pair of arms pivotally mounted to one endthereof, a stationary pin Aextending from said handle memberintermediate the eX- tending ends of said arms, alongitudinallymovable-pin adjacent said stationary pin, a

receiver and electrical conductors connecting tus, the combination of alhandle member, a I

said arms with said receiver and said pins with a source of electricalenergy'.

2. In an armature circuit,testin.g apparatus, `the combination of ahandle member, a .j

pair of arms pivotally mounted thereon, a" pin secured intermediate theextendedends or' s'aid arms, a longitudinally movable pin' mountedadjacent said other pin, an induction .coil mounted in said,hand1e,.areceiver,

electrical conductors connecting," said re-, ceiver with the secondarywinding of said induction coil, conductors connecting said arms with theterminals of the primary' winding of'said coil and conductors for con--necting said pins 'with an l alternating current source.` 1

. 3. In an armature circuit testing'a'pparatus,'the combination of ahandle member, a pair ofarmsI pivotally mounted, thereon,

means tending toy hold -the extended ends of said arms toward cachother, a pin secured intermediate the extended ends of said arms,

a longitudinally movable pin mountedadjacent said other l pin, aninduction coil mounted in said handle, a receiver, electrical conductorsconnecting said receiver with the secondary winding of said inductioncoil, conductors connecting said arms with the terminals 'of the primaryWinding of' said coil and conductors for connecting said pins Withanalternating current source.

` 4f. ln an armature circuit. testing apparatus, the combination of aninsulated head piece', ahv iron tube 'with one endv securedtherein'form'ing a core for an induction coil, a handle secured on saidtube inclosing the primary and secondary winding of the-v inductioncoil, a4 pair of arms pivotally -mounted on said head, meansIA tending'to said pins with an alternating current source.

5.v ln an armature circuit testing apparatus, the combination of an.insulated head piece, an iron tube with .one end vsecured thereinforming a core for'an induction coil,

ra, handle secured on said tube inclosing the primary, and secondary'winding of the induction coil, a pair of arms pivotally mounted on saidhead, means tending to hold their extended ends toward cach other, a pinseing said pins with any source of electrical cured to said headintermediate the extended' energy producing an alternating current, endsof said arms and a longitudinally mov-l and another electrical conductorconnecting able pin adjacent thereto, means tending to said movable pinand with a contact adapted 5 hold said movable pin outwardly, a receiverto engage the shaft of the armature. 15

in electrical connection with lthe secondary In testimony whereof, Ihave hereunto set Winding of said induction coil, conductore my hand atSan Diego, California, this 23d connecting both terminals of saidprimary day of October, 1916. l

winding of said induction coil with said 10 arms and electricalconductors for connect- CLYDE ZEEK.

